A Nashville man was sentenced to 35 years in prison for producing and possession of child pornography.

Mark K. White, 64, sexually molested and recorded sexually explicit images of young girls, ages 4 to 7, while visiting the Lawrenceburg area in 2013, a news release from the U.S. Attorney's Office said.

During the investigation, investigators found more than 400 images of child pornography on White's phone. The photos included at least 18 victims known from other investigations.

Investigators said White's sexual abuse of young girls dated back to 2011. He pleaded guilty in January 2016 to production of child porn and possession of child porn, admitting that he had recorded the sexually explicit images.

Investigators for the Lawrenceburg Police Department, TBI and FBI worked on the case.